Which of these elements is essential to making up all organic molecules? a. hydrogen b oxygen c. carbon d nitrogen

b) the inside picture would look at a very high temperature in a very low ph

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: